For each phase change, determine the sign of δh and δs. drag the appropriate items to their respective bins.

We know that the relationship between enthalpy and entropy is:
ΔS = ΔH/T
Therefore, both the change in enthalpy and the change in entropy will have the same sign. Now, considering each change:

Sublimation: Negative
Freezing: Positive
Condensation: Positive
Deposition: Positive
Boiling: Negative
Melting: Negative

Ithink about 50 % of an original isotope's number of atoms remain

Answercan utilize even low wind speed to produce electricity;